Download Senscient ELDS Open Path Gas Detector Series 1000 for Ventilation

Laser Technology for
Reliable Gas Detection
Senscient ELDSTM
Series 1000 for
Methane - Ventilation
Zone
Overview
This Open Path Gas Detector (OPGD) is
specific to Natural Gas / Methane (CH4).
The separate transmitter and receiver
assemblies are certified for use in
potentially explosive atmospheres and
can detect CH4 over distances of 0.5 to 5
metres.
Constructed in high grade corrosion
resistant 316L Stainless Steel this device
is ideally suited for onshore and offshore,
open and enclosed environments. Typically
positioned in front of one or a number of
banked ventilation air intakes and with a
genuine speed of response then 1 second,
this device is ideal for fast shutdown of
HVAC inlets.
With no consumable parts and the patented
daily auto-self testing facility; called
SimuGasTM; the Senscient ELDSTM CH4 VZ
detector offers significant installed and
operational cost savings over conventional fixed point and cross duct flammable gas
detectors.
Applications:
Open path Natural Gas / CH4 ventilation
inlet gas detectors are used to monitor for
fugitive emissions, protect plant from the
risk of explosion. These devices are typical
located in front of a single banked set of
ventilation air inlet grills to provide fast
detection and shutdown of ventilation
dampers.
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Oil & gas exploration rigs
Oil & gas production platforms
Oil & gas Production facilities
FPSO’s
Petrochemical refineries
Gas Turbine combustion air intakes
Natural Gas / Methane - Ventilation Zone OPGD
Features:
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Ultra narrow wavelength operation - Improved availability
in heavy fog and rain compared to conventional, Infra Red
devices
SimuGasTM daily auto gas testing – No manual intervention or
on-going cost for routine gas testing.
Fastest speed of response (<1 seconds) – Increased safety by
providing earlier warning.
Increased sensitivity over conventional IR devices e.g.
0-10,25 or 100% LEL -providing earlier detection & faster
HVAC inlet shutdown
CH4 specific – No false alarms from other hydrocarbon gases,
as experienced with many other flammable gas detection
technologies.
About Senscient ELDSTM
Senscient’s Enhanced Laser Diode Spectroscopy (ELDSTM) product
range builds upon the proven benefits of laser based gas
sensing, taking this sensing principle to the next level. Patented
technologies such as the Harmonic FingerprintTM and SimuGasTM
provide the highest levels of gas specificity, false alarm rejection
and safety integrity in the most challenging operating conditions.
Detectable gases include: Methane (CH4) , Ethylene (C2H4),
Ammonia (NH3), Carbon Dioxide (CO2), Hydrogen Sulphide
(H2S), Hydrogen Chloride (HCl), Hydrogen Fluoride (HF) and
Multihydrocarbons (MHC). Other gases to be added.
E-mail: [email protected] Web: www.senscient.com
International Headquarters : F2 Arena Business Centre, Holyrood Close, Poole, Dorset BH17 7FP United Kingdom
Mechanical:
Specifications:
Gas Ranges Path Length
Format
Methane (CH4)
0-10% LEL
0-25% LEL
0-100% LEL
0.5 - 5m
Individual Transmitter (Tx) &
Receiver (Rx)
Size
Tx/Rx 140 mm dia. x 300 mm
Weight
Tx/Rx 12 kg each (c/w bracket)
Sun / Deluge Protection
Tx & Rx supplied with sun /
deluge protection
Mounting Tx & Rx supplied with mounting
brackets incorporating fixing
holes / slots for flat surface or
metal pole mounting. (Note:
mounting poles should be of
4” to 6” [100mm to 150mm]
diameter. Fixing bolts / U bolts
are not supplied)
Performance:
Response Time Repeatability Linearity T90 =< 1 second
< ± 5% FSD
< ± 5% FSD
Environmental:
Ingress Protection Enclosure Material
Lens Material Tx
Lens Material Rx
Operating Temperature
Humidity Vibration EMC Optical:
IP66/67 NEMA type 4/4X/6
316L stainless steel
Faceted Optical Glass
Aspheric Optical Glass
-55°C to +60°C (ambient)
0 – 100% RH (non-condensing)
10 – 150 Hz, 2 g
EN50270
Certification/Approvals:
CSA and UL
Class I Div 1 Groups B C & D T5
Class II Div 1 Groups E F & G T5
Class III Div 1
Ex d IIB + H2 T5
Class I, Zone 1, AEx d IIB + H2 T5
Tamb = -40°C to +60°C
Entry: ¾” NPT
ATEX / IECEx
II 2 GD Exd IIB + H2 T5 Tamb -40OC to +60OC Gb and Ex tb IIIC T100OC
Tamb = -40°C to +60°C Db IP66/67
Entry: M25
Uses HARMONIC FINGERPRINTTM to ensure no false alarms
during adverse environmental conditions, misalignment or
partial obscuration.
Alignment +/- 2.5°
Obscuration <= 95%
Heated Optics Tx & Rx lenses are continuously heated.
Laser Beam Class 1 (Eye Safe) IEC 60825-1
FDA Accession No. 1410373-000 (For Imports into USA)
Calibration :
GOST-K
EAC Ex TR CU Coc
IExdIIBT5/H2X
Entry: M25
Factory calibrated for life, no routine calibration required.
GOST-R
EAC Ex TR CU Coc
IExdIIBT5/H2X
Entry: M25
To order / specify: Senscient ELDS 1000VZ
Gas type: CH4
Measuring Range: e.g. 0-25% LEL
Path length: 0.5- 5m
Certification: e.g. ATEX
InMetro
Ex d IIB+H2 T5 Gb
ou
Extb IIIC T100OC Db IP66/67
Tamb: -20OC a +60OC
Entry: M25
Safety Integrity
Ordering Information:
Accessories:
Approved Interface terminal (PC)
Interface terminal (Tablet)
Optical Alignment Sight
Gassing Cell (Optional)
Snow Cowl (Optional)
Suitable for use in SIL2 Safety Systems per IEC 61508
Electrical:
Operating Voltage Power Consumption Outputs (Analog x 2)
Low Signal Beam Block Inhibit Fault
Over Range
Output (Digital) Tx & Rx +24V DC , (+18 to +32V DC)
Tx = 12 W (max), Rx = 10 W (max)
4-20 mA,
Configurable for 2 wire isolated or
single wire, sink or source.
Primary range on 4-20mA(1) Secondary range on 4-20mA(2),
Note: Secondary range is typically
greater than the primary.
3 mA (configurable 1 to 4 mA)
2.5 mA (configurable 0 to 3.5 mA)
2 mA (configurable 1 to 3.5 mA)
0.5 mA (configurable 0 to 1 mA)
21.5 mA (configerable 20 to 21.9
mA)
HART 7.1 & MODBUS RTU
supported
Distributed by:
All information subject to change without notice. All rights reserved. Copyright 2014 Senscient Ltd
01-01-2350-D R4 ECR299
E-mail: [email protected] Web: www.senscient.com
International Headquarters : F2 Arena Business Centre, Holyrood Close, Poole, Dorset BH17 7FP United Kingdom